[OH:1][C:2]1[C:3]([CH3:18])=[C:4]2[C:9](=[C:10]([CH3:13])[C:11]=1[CH3:12])[O:8][C:7]([CH2:15][CH2:16][OH:17])([CH3:14])[CH2:6][CH2:5]2.[CH2:19](Br)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>>[CH2:19]([O:1][C:2]1[C:3]([CH3:18])=[C:4]2[C:9](=[C:10]([CH3:13])[C:11]=1[CH3:12])[O:8][C:7]([CH2:15][CH2:16][OH:17])([CH3:14])[CH2:6][CH2:5]2)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1Following the procedure described in Preparation 1, 2-(6-hydroxy-2,5,7,8-tetramethylchroman-2-yl)ethanol was reacted with benzyl bromide and treated and purified to give the title compound.
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